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Buttondown Pricing Log in Build your newsletterSign up Subprocessor list Third parties that process data on our behalf A subprocessor is a third-party service provider that processes personal data on behalf of Buttondown in the delivery of our email newsletter services. These entities assist us in providing our core functionality while maintaining the same high standards of data protection and security. What is a Subprocessor? Subprocessors are external organizations that: Process personal data under our instructions Help deliver specific aspects of our service Are bound by contractual obligations to protect your data Are carefully selected and regularly audited for compliance Our Subprocessors We work with the following subprocessors: Subprocessor Purpose Amazon Web Services Application hosting and cloud infrastructure Cloudflare Content delivery network and security services Google Workspace Business productivity and collaboration tools Heroku Legacy domain ingress and TLS termination Mailgun Email delivery and transactional email services Plain Customer support and help desk software Postmark Email delivery and transactional email services Seline Privacy-focused website analytics Sentry Error monitoring and performance tracking Slack Internal communication and support tools Stripe Payment processing and billing Twilio Communication APIs and messaging services Data Protection Commitments All our subprocessors are required to: Maintain appropriate technical and organizational security measures Process data only as instructed by Buttondown Provide adequate guarantees for data protection Allow for audits and inspections when necessary Notify us of any data breaches or security incidents Updates to Subprocessors We may update our list of subprocessors from time to time. When we add or replace a subprocessor, we will: Notify customers of any changes Ensure the new subprocessor meets our security standards Update this page with current information Provide advance notice for significant changes Contact Information If you have questions about our subprocessors or data processing practices, please contact us at [email protected]. Metadata Last updated 2026-09-17 First published 2025-07-05 Contact Information Data Protection Officer [email protected] Privacy Inquiries [email protected] Contact Us deliver to Buttondown, LLC 406 W Franklin St. #201 Richmond, VA 23221 United States Buttondown is the last email platform you’ll switch to. Join your last newsletter platform AboutBlogTestimonialsDocsFeaturesIntegrations The Newsletter BookAlternativesGuidesClimateBrand guidelinesKudosTerms of serviceUse casesPrivacy policyCustomer supportStatusOpen source © 2026 Buttondown. All rights reserved; have a lovely day.